FRONT POWER SEAT CONTROL SYSTEM(w/ Memory), Diagnostic DTC:B2658

DTC Code DTC Name
B2658 Short in Sensor with Motor Power Supply Circuit

DESCRIPTION

This DTC is stored when a power seat motor operates (a position control sensor is being supplied with power) and the power supply voltage does not rise to the specified value.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2658 Short in Sensor with Motor Power Supply Circuit Problem with the voltage supplied to the position control sensor.

  • Front power seat switch LH

  • Slide motor (Front seat adjuster assembly LH)

  • Wire harness or connector

WIRING DIAGRAM

A01MGUVE14
for LHD
*a O/P
*b Slide Motor
*c Front Power Seat Switch LH
*d Front Seat Adjuster Assembly LH
A01MGUVE15
for RHD
*a O/P
*b Slide Motor
*c Front Power Seat Switch RH
*d Front Seat Adjuster Assembly RH

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Driver Seat > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Driver Seat > Trouble Codes
      OK
      DTC B2658 is not output.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    A

    USE SIMULATION METHOD TO CHECK Click here

    C

    CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH RH - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY RH)) Click here

    B

  3. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH))


    1. Disconnect the a10 front power seat switch LH connector.

    2. Disconnect the a8 slide motor (front seat adjuster assembly LH) connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      a10-5 (SSRS) - a8-2 (O/P) Always Below 1 Ω
      a10-5 (SSRS) - Body ground Always 10 kΩ or higher
      a8-2 (O/P) - Body ground Always 10 kΩ or higher
      a10-1 (SGND) - a8-3 (GND) Always Below 1 Ω
      a10-1 (SGND) - Body ground Always 10 kΩ or higher
      a8-3 (GND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

  4. CHECK FRONT POWER SEAT SWITCH LH (SLIDE MOTOR CIRCUIT)


    1. A01MFP3C03
      *a

      Front view of wire harness connector

      (to Slide Motor (Front Seat Adjuster Assembly LH))

      Reconnect the slide motor (front seat adjuster assembly LH) connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      a8-2 (O/P) - a8-3 (GND) Sliding switch on 4.8 to 5.1 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT SEAT ADJUSTER ASSEMBLY LH Click here

    NG

    REPLACE FRONT POWER SEAT SWITCH LH Click here

  5. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH RH - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY RH))


    1. Disconnect the Z5 front power seat switch RH connector.

    2. Disconnect the Z1 slide motor (front seat adjuster assembly RH) connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      Z5-5 (SSRS) - Z1-2 (O/P) Always Below 1 Ω
      Z5-5 (SSRS) - Body ground Always 10 kΩ or higher
      Z1-2 (O/P) - Body ground Always 10 kΩ or higher
      Z5-1 (SGND) - Z1-3 (GND) Always Below 1 Ω
      Z5-1 (SGND) - Body ground Always 10 kΩ or higher
      Z1-3 (GND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

  6. CHECK FRONT POWER SEAT SWITCH RH (SLIDE MOTOR CIRCUIT)


    1. A01MFP3C06
      *a

      Front view of wire harness connector

      (to Slide Motor (Front Seat Adjuster Assembly RH))

      Reconnect the slide motor (front seat adjuster assembly RH) connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      Z1-2 (O/P) - Z1-3 (GND) Sliding switch on 4.8 to 5.1 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT SEAT ADJUSTER ASSEMBLY RH Click here

    NG

    REPLACE FRONT POWER SEAT SWITCH RH Click here